28286440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:459

約数の個数: 128

約数和(自身を含む): 82656000

約数和(自身を除く): 54369560

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 52, 56, 65, 70, 76, 91, 95, 104, 130, 133, 140, 152, 182, 190, 247, 260, 266, 280, 364, 380, 409, 455, 494, 520, 532, 665, 728, 760, 818, 910, 988, 1064, 1235, 1330, 1636, 1729, 1820, 1976, 2045, 2470, 2660, 2863, 3272, 3458, 3640, 4090, 4940, 5317, 5320, 5726, 6916, 7771, 8180, 8645, 9880, 10634, 11452, 13832, 14315, 15542, 16360, 17290, 21268, 22904, 26585, 28630, 31084, 34580, 37219, 38855, 42536, 53170, 54397, 57260, 62168, 69160, 74438, 77710, 101023, 106340, 108794, 114520, 148876, 155420, 186095, 202046, 212680, 217588, 271985, 297752, 310840, 372190, 404092, 435176, 505115, 543970, 707161, 744380, 808184, 1010230, 1087940, 1414322, 1488760, 2020460, 2175880, 2828644, 3535805, 4040920, 5657288, 7071610, 14143220, 28286440]

約数ペア:

[(1, 28286440), (2, 14143220), (4, 7071610), (5, 5657288), (7, 4040920), (8, 3535805), (10, 2828644), (13, 2175880), (14, 2020460), (19, 1488760), (20, 1414322), (26, 1087940), (28, 1010230), (35, 808184), (38, 744380), (40, 707161), (52, 543970), (56, 505115), (65, 435176), (70, 404092), (76, 372190), (91, 310840), (95, 297752), (104, 271985), (130, 217588), (133, 212680), (140, 202046), (152, 186095), (182, 155420), (190, 148876), (247, 114520), (260, 108794), (266, 106340), (280, 101023), (364, 77710), (380, 74438), (409, 69160), (455, 62168), (494, 57260), (520, 54397), (532, 53170), (665, 42536), (728, 38855), (760, 37219), (818, 34580), (910, 31084), (988, 28630), (1064, 26585), (1235, 22904), (1330, 21268), (1636, 17290), (1729, 16360), (1820, 15542), (1976, 14315), (2045, 13832), (2470, 11452), (2660, 10634), (2863, 9880), (3272, 8645), (3458, 8180), (3640, 7771), (4090, 6916), (4940, 5726), (5317, 5320)]